Sole edge inking machine



May 14, 1940. T. J. DoYLE 2.200.417

SOLE EDGE lINKING MACHINE V Wf/vm/w www?? May 14, 1940. T. J. DoYLE 2.200.417

soLE EDGE vHIKING MACHINE Filed Dec. 14, 1937 2 Sheets-Sheet 2 Patented May 14, 1940 UNITED 4STATES PATENT OFF'HCE Shoe Machinery Corporation,

Borough of Flemington, N. J., a corporation of New Jersey Application December 14, 1937, Serial No. 179,745

21 Claims.

This invention relates to coating machines and is herein illustrated as embodied in a machine for applying ink to the edge and an adjacent marginal surface of a shoe sole.

In the manufacture of some types of shoes, notably McKay shoes, it is desired to apply ink not only to the peripheral edge of a sole but also to an adjacent marginal surface of the upper face of the sole prior to its incorporation in the shoe. The ink which is used maybe any desired form of coating material and will usually be colored brown or black. It has for a long time been common to applyink to these portions of a Sole by means of a toothbrush held in the hand of the operator and inasmuch as the operators become skilled, the cost is low. A satisfactory machine for the purpose, ytherefore, must be capable of coating a large number of soles in a short time and of accurately controlling the quantity of material applied so that little attention by the operator is` needed.

One object of the invention, accordingly, is to produce an improved ink-applying machine which will handle work very rapidly and control the quantity of ink accurately. The simultaneous application of ink to the peripheral edge and an adjacent marginal surface is, accomplished, in the illustrated machine, by means of a grooved roll having a V-shaped groove formedby intersecting conical surfaces which, at the point of application of the .wo-rk, form a right angle. One important feature of the invention resides in this improved roller construction and in the manner of its mounting on a shaftinclined downwardly toward the operator whereby the lower portion of the roll may dip in an ink-containing receptacle and so that a sole, held in a substantially horizontal position, may readily be presented to the groove of the roll at its upper portion where there is found a horizontal surface for coating a marginal face of the sole and a vertical surface for coating the edge of the sole.

An exact control of the quantity of ink applied to the work is secured, in accordance with other features of the invention, by means'of a novel arrangement of Scrapers. These, as hereinV illustrated, include a pointed scraper entering the groove of the roll on its upgoing side and manually adjustable both toward and away from the roll to control the quantity of ink applied to the adjacent faces of the Work. Associated with this scraper are auxiliary Scrapers bearing against the lateral faces of the disk-like roll to keep them clean and having projections overhanging the corners of the `grooved roll to prevent the accumulation of ink along these edges. As illustrated, these are adjustable in and out with the pointed scraper.

Still another feature of the inventionresides in an arrangement for controlling the pointed scraper so that ink may be entirely removed from one or the other of the conical faces of the grooved roll to enable the same machine to be utilized for coating, singly, either a marginal portion of a sole or a peripheral edge.

Another important feature of the invention` resides in the mounting for a feed roll which cooperates with the applying roll and is positively driven to assist the operator in passing the work through the machine. It will be recognized, also, that the applying roll is driven in a. direction opposite to the direction of rotation of the feed roll. Inasmuch as there will be a substantial variation in the thickness of soles, or even in different parts of a single sole, presented to the machine, a novel arrangement is provided for supporting and driving this upper feed roll so that it may yield toward and away from the applying roll without interfering with the driving connection. The presentation of Work to the machine is facilitated by a hemispherical V4supporting vroll freely rotatable in front of the applying roll and beneath the feed roll and provision is made for adjusting the support for this roll heightwise, laterally, and in and out with respect to the applying roll thereby to bring it into the best relation to the driven feed roll.

These and other features of the invention will be described in the following specification and shown in the accompanying drawings, in which Fig. 1 is a side elevation of the machine with parts broken away and in section;

Fig. 2 is a plan View with the cover removed; Fig. 3 is an angular View of the whole machine; Fig. 4 is a detail View on a larger scale, looking up at the lower end of the applying roll' and showing the driving mechanism for this roll and the feed roll, as well as the Scrapers for the applying roll; l Fig. 5 is a detail view looking downwardly on the applying roll, andthe Scrapers therefor, at right angles to the axis of that roll Fig. 6 is a side elevation, with parts in section, of the co-operating applying, feeding and supporting rolls, and L v Fig. '7 is a transverse section through the inksupplying receptacle on the line VII-VII of Fig. 1.

The machine is provided with a disk-like applying roll having a V-groove in its periphery which is formed by intersecting frusto-conical surfaces |52 and |58 (Fig. 6). This grooved applying roll I is secured to the lower end of a shaft I2 rotatably mounted in a bearing I4 (Fig. l) formed in a hollow frame I6 and so positioned that the shaft is inclined downwardly and forwardly toward an operator facing the lower end of the applying roll. Coating fluid, such as ink, is supplied to the applying roll I0 from a receptacle I8 as a piece of sheet stock, such as a shoe sole 20, is presented to the applying roll and is held there by a driven feed roll 22 which presses the work into the groove of the applying roll at the top of the latter, holding the lower margin of the work in contact with a horizontal surface portion |54 and the edge in contact with a vertical surface portion |50. Associated with these rolls is a supporting roll 24 of substantially hemispherical shape, having its upper surface at the level of the adjacent horizontal surface portion |54. This roll 24 is freely rotatable on an arm 26, mounted in a manner to be later described.

The applying roll is driven by means of a gear-v and-worm connection 28, 30 (Fig. 2) to a drive shaft 32 journaled in the frame and which receives power from a driving pulley 34.

The shallow receptacle I8 is supported by means of a bolt 36 adjustably held by a pointed set screw 40 (Fig. 2) in a bracket 38 forming part of the frame of the machine, thus enabling the receptacle to be moved heightwise so that the lower side of the applying roll will dip in the ink to the desired depth. This receptacle has an enlarged portion 42 at the front of the machine, which is connected by a narrow trough 44 to a still larger portion 46 at the rear of the machine. This rear end of the receptacle has a rim 48 for the reception of the outlet end of an inverted bottle 50 which is supported by means of a clamp band 52 on a U-shaped bracket 54 attached by a screw 55 to the frame of the machine. By this arrangement, the level of the ink in the receptacle I8, 42 will be kept substantially constant. For convenience in placing a full bottle in inverted position above the receptacle, the latter may be provided: with a screwcap B having a valve mechanism 58 of the type shown in Letters Patent of the United States No. 2,013,853, granted September l0, 1935, on the application of E. J. Ray. A cover 59 held in position by screws is pr'ovided for the connecting trough 44.

Control of the quantity of ink taken out of the receptacle by the applying roll is eiected by means of associated Scrapers 60, 62 and 64 which are mounted on an inclined rod 66 parallel to the axis of the applying roll and supported in lugs 68 projecting from the frame of the machine. Each of these Scrapers has a hook-shaped upper end- (Figs. 3 and 4) to enable it to extend over the rim of the enlarged portion 42 of the receptacle I8 and the center scraper 80, secured to the rod 66 by a taper pin '|0, has a pointed or spearshaped upper end 'I4 (Fig. 5) fitting the groove 'l2 of the applying roll. This center scraper 60 has a depending arm 'I6 pivoted to a bolt 'I8 which passes through the side of the frame and is provided with a thumb nut 80. A coil spring 82 urges the depending arm I6 clockwise, as viewed in Fig, 4. The scr'apers 62 and 84 each are clamped on the rod 66 by clamp screws 84 and are provided at their upper ends with projecting portions 86 and 88, respectively, which engage the lateral faces of the applying roll I0 to clean the ink therefrom, thereby to prevent any accumulation of dried ink such as might otherwise result. The depending ends of these scrapers make it easy for the removed ink to drip off into the receptable. In addition, these Scrapers have, respectively, inward projections 90 and 92 (Figs. 3 and 5) which co-operate with the corners of the grooved roll to keep them clean It will be noted that all three Scrapers may be adjusted in and out together, toward and away from the periphery of the applying roll, by means of the thumb nut 80. In addition, it is possible to adjust the pointed scraper 60 so that the end 'I4 which enters the groove of the roll will bear on one side face of the groove to an extent sufficient to clean all the ink therefrom, thus enabling the roll to be utilized for coating either the peripheral edge or the marginal face of the sole 20, without coating the adjacent portion, as in the ordinary operation of the machine. For this purpose, the rod 68, on which the Scrapers are mounted, may be adjusted axially by a screw 94 against the expansive force of a spring 96 (Figs. 1 and 5) without interfering with the ability to adjust the Scrapers radially of the applying roll by the thumb screw 80. The clamp screws 84 will have been loosened before the rod 66 is adjusted axially to allow them to slip thereon and will later be reattached to the r'od in the desired relation to the corners of the roll.

The feed roll 22 is frusto conical in shape, thereby to automatically swing the sole into the groove of the applying roll against the vertical portion |50 thereof. This roll 22 is preferably made of resilient material, such as rubber or a rubber substitute, being secured by a screw |00 (Fig. 6) to a holder |02 which is clamped by a set screw on the lower end of a shaft |04 eX- tending parallel to the shaft. I2 of the applying roll but capable of adjustment toward and away from that roll. For this purpose, the shaft |04 is journaled in a T-shaped member |06 (Figs. 3 and 4), `an upper arm of which passes freely through an opening |0'I in the frame. This member |06 is pivoted on a countershaft |08 extending between an arm |00 and the body of the frame and is adjustable, against the expansive forceof a spring IIO, by a thumb screw 2. It is desired that this feed roll 22 be driven clockwise, as viewed from its lower end. Accordingly, it has a pinion |I4 secured to the upper end of its shaft |04 and arranged' to mesh with a gear IIE on the upper end of the countershaft |08 which is connected, in turn, to the driven shaft I2 of the applying roll by gears |I8 and |20. The gear` I|8 is mounted on a studl |22 in the frame. It will be seen that adjustment of the position of the feed roll 22 by the thumb screw ||2 does not affect the driving connection because the T-shaped arm |05 is also pivoted about the center of the gear IIB so that the pinion 4 rolls around the periphery of the latter. For a similar reason, variations in thickness of the work are accommodated by this same mechanism against the action of the spring I0. On a lower arm of the T-shaped member |06, there is provided a clamp |24 in which there is adjustably secured a bent rod or stop |26, the lower end of which is positioned beside the upper face of the applying roll and, bridging the gap between the two rolls, prevents a piece of work being inadvertently pushed beyond the applying roll I0 as it is presented to the machine by the operator'. The driving gears, being positioned within the hollow frame I6, are protected by a :III

removable cover |28, making it possible to provide proper lubrication without danger of getting oil on the work.

The substantially hemispherical shape of the supporting roll 24 avoids any interference between a sole and this roll, such as might result with a conformed or molded sole. Furthermore, provision is made for setting the arm 26 which carries the supporting roll 24 to bring the latter to the most advantageous position with respect to the feed roll Ill, so that its dragging action on-the under surface of the sole, as the latter turns at curves, will tend to swing the latter into the groove of the applying roll and will assist the frusto-conical feed roll in making the presentation of work to the machine nearly automatic. Accordingly, this arm 26 is adjustable horizontally, left to right, by a slot-and-screw connection |30 (Figs. 1 and 3) to a tiltablecan rier |32. This carrier |32 is received in the channel of a grooved block |34 and is pivoted therein on a cross rod |36. To adjust the position of the supporting roll 24 toward and away from the applying roll, the tiltable carrier |32 has set screws |38 and |40 above and below the pivot rod |36. These set screws bear against the bottom of the channel in the grooved block |34 and exactly determine the position of the tiltable carrier |32 therein. It will be noted that the grooved block |34 is adjustable vertically between ribs |42 formed on the hollow frame I6 and may be clamped in position by means of a screw |44.

In the use of the machine, assuming that the Scrapers 60, 62 and 64 have been adjusted and that a supply of ink has been provided, an operator facing the left side of the `machine shown in Fig. l, Will present the peripheries of successive soles to the groove of the applying roll Il). It will be noted that a vertical, axial section'taken through that roll will show that there is a vertical portion |50 (Fig. 6) of the upper conical surface |52 at the point of presentation of the work which will uniformly coat the periphery of the sole. It will also be noted that there is a horizontal portion |54 of the lower conical surface |56 which will exactly co-operate with the under marginal face of the sole to support and coat lit adjacent to the peripheral edge. The sole, riding over the supporting roll 24, will be held in positionin the groove of the applying roll by the driven yielding feed roll 22. Inasmuch as this is a frusto-conical roll, its tendency will be to hold the sole against the vertical face |50 and, inasmuch as both the feed roll 22 and the applying roll I0 are positively driven, the work will pass through the machine with a minimum of attention on the part of the operator, thus enabling the production to be maintained at a high gure without lessening the quality of the work.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a coating machine, an applying roll having a work-receiving groove, kmeans for rotatably supporting said roll on an axis inclined to the horizontal, a receptacle for supplying coating material to the lower side of the roll, and means associated with the upgoing side of the roll for controlling the quantity of coating material.

2. In a coating machine, a grooved coatingapplying roll having angularly related frustoconical applying surfaces within said groove, and means for supplying coating material to the under side o-f said roll while leaving the upper side exposed thereby permitting the presentation of the edge of a piece of Work to one of said frusto-conical surfaces and the adjacent margin of the `surface of the Work to the other frusto-conical surface at the same time. y

3. In a coating machine for square-edged sheet stock, a solid applying roll having a V-shaped work-receiving groove formed by intersecting applying surfaces, the intersecting surfaces of said groove being substantially normal to one another, means to support said roll for rotation about an axis so related to said surfacesthat a substantially horizontal work-supporting portion and an adjacent edge-contacting portion are provided for contactwith the square edge of a piece of work, and means for supplying coating material to said grooved roll. a

4. In a coating machine, a receptacle for coating material, a shaft inclined downwardly toward the receptacle, and an applying roll having a groove formed by intersecting applying surfaces, said roll dipping in said coating material and mounted on the lower end of said shaft, the intersecting surfaces of said groove being substantially normal to one another whereby a vertical axial section through said applying roll will show a substantially horizontal portion of the groove for engagement with the under margin of a sole and a substantially vertical portion for engagement with the edge of the sole.

5. In a coating machine, a shaft, an applying roll mounted thereon having va work-receiving groove, means for supplying 'coating material thereto, a shaft parallel to the axis of said applying roll and supported foradjustment toward and away from the latter, a frusto-conical feed roll mounted thereon, resilient means urging said feed roll toward the applying roll, andmeans for driving said shafts in opposite directions operable in all the various positions of adjustment of the feed roll.

6. In a coating machine, a shaft inclined downwardly toward the operator, a grooved applying roll secured to the lower end of said shaft, means for driving said shaft, a shaft mounted for movement to a plurality of positions parallel to the shaft of the applying roll, a presser roll mounted thereon, and means for driving said presser roll in all positions of adjustment of its shaft.

7. In a machine for coating a piece of sheet stock, an applying roll having a groove receiving a corner of the edge of said stock, said groove providing a substantially horizontal work-supporting portion at the point of application of the work and a substantially vertical edge-contacting portion adjacent thereto, means for supplying coating material to said grooved roll, and a worksupporting member adjacent to the horizontal portion of the roll and having its work-contact- K ing surface substantially at the level of said portion.

8. In a machine for coating a piece of sheet stock, an applying roll having a groove receiving a corner of the edge of said stock, said groove providing a substantially horizontal Work-supporting portion at the point of application of the work and a substantially vertical edge-contacting portion adjacent thereto, means for supplying coating material to said grooved roll, and a feed roll engaging the upper surface of the sheet stock to hold the margin thereof in contact with lthe horizontal supporting surface of the applying roll,

9. In a machinefor coating a piece of sheet stock, an applying roll having a groove receiving a corner of the edge of said stock, said groove providing a substantially horizontal work-supporting portion at the point of application of the Work and a substantially vertical edge-contacting portion adjacent thereto, means for supplying coating material to said grooved roll, and a frustoconical feed roll engaging the upper margin of the stock to press it against said supporting surface and to urge it inwardly against the vertical surface.

10. In a machine for coating a piece of sheet stock, an applying roll having a groove receiving a corner of the edge of said stock, means for supplying coating material to the groove at the under side of said roll, a shaft inclined to the horizontal supporting said roll at its lower end, a substantially parallel shaft having a frustoconical feed roll at its lower end for engagement with an upper margin of a piece of sheet stock presented to the groove at the top of said applying roll, and a supporting roll engaging the under margin of said sheet stock substantially beneath said feed roll.

11. In a coating machine, a shaft inclined downwardly toward the operator, an applying roll mounted at the lower end of said shaft and having a peripheral work-receiving groove, means for supplying coating material to the lower portion of the periphery of said applying roll, and a work support positioned in front of said applying roll adjacent to the upper portion of the lower end of the roll.

l2. In a coating machine, a grooved coating roll having angularly related applying surfaces, means for supplying coating material to the under side of said roll, a work-supporting roll positioned adjacent to the upper portion of said applying roll, and means for mounting said supporting roll for tilting adjustment toward and away from the applying roll.

13. In a coating machine, a grooved coating 1'011 having angularly related applying surfaces, means for supplying coating material to the under side of said roll, means for feeding the work, a work-supporting roll positioned adjacent to the upper portion of said applying roll, and means for mounting said supporting roll for adjustment approximately parallel to the direction of feeding movement.

14. In a coating machine, an applying roll having angularly related applying surfaces intersecting to form a groove, means for supplying coating material to the under side of said roll, a hemispherical supporting roll positioned in front of and near the top of the roll, and means for mounting said supporting roll for heightwise adjustment.

15. In a coating machine, an applying roll having angularly related applying surfaces intersecting to form a groove, means for supplying coating material to the under side of said roll, a hemispherical supporting roll positioned in front of and near the top of the roll, means for adjustably mounting said supporting roll for heightwise adjustment, and means for tiltably mounting said roll for adjustment toward and away from the applying roll.

16. In a coating-applying machine, an applying roll having a work-receiving groove, a trough for supplying coating material to the lower side of said roll, a scraper for controlling the quantity of coating material in the groove of the applying roll, and depending means associated with said scraper for conducting coating material removed from the groove back into the trough.

17. In a coating machine, a V-grooved apply- .ing roll, means for supplying coating material to the under side of said roll, a scraper fitting said groove and mounted on an axis parallel to the axis of the applying roll,and means for axially adjusting said scraper to cause it to clean one side of the groove.

18. In a coating machine, a V-grooved applying roll, means for supplying coating material to the under side of said roll, a scraper tting said groove and mounted on an axis parallel to the axis of the applying roll, means for rotatably adjusting said scraper to control the quantity of coating material applied, and means for axially adjusting said scraper to cause it to clean one side of the groove.

19. In a coating machine, a frame, a shaft journaled in said frame, a narrow, grooved applying roll mounted on said shaft, means for supplying coating material to said roll, a rod parallel to said shaft and mounted insaid frame for pivotal and sliding movement, a scraper for the grooved portion of the applying roll secured to said rod, means for controlling said scraper, a spring urging said rod axially in one direction, and a screw opposing the action of said spring arranged to move the rod axially in the other direction.

20. In a coating machine, a narrow, grooved applying roll, means for supplying coating material thereto, a pivot rod, a scraper co-operating with the groove in said roll `to control the quantity of coating material, said scraper being secured to said rod, a scraper for a lateral face of the roll, means for clamping said lateral scraper to the rodandimeans for adjusting the position of said scrapers simultaneously.

21. In a coating machine, a disk-like applying roll having a V-shaped groove in its periphery, means for supplying coating material to the under side of the roll, a scraper for controlling the quantity of material carried in the groove, a scraper for the lateral face of the roll having also a notched portion co-operating with the edge of the groove, and means for moving said scrapers toward and away from the axis of the roll to vary the relation of the notched portion of the latter scraper to the roll without changing the effectiveness of the portion engaging the lateral face of the roll.

THOMAS J. DOYLE. 

